/Engine/Source/Runtime/UMG/Public/Blueprint/WidgetLayoutLibrary.h
Gets the projected world to screen position for a player, then converts it into a widget position, which takes into account any quality scaling.
true if the position projects onto the screen.
static bool ProjectWorldLocationToWidgetPosition ( [APlayerController](API\Runtime\Engine\GameFramework\APlayerController) * PlayerController, FVector WorldLocation, FVector2D & ScreenPosition, bool bPlayerViewportRelative )